60 



ANATOMY OF THE CENTRAL NEHVOXJS SYSTEM. 



phosis to terrestrial amphibia, either lost or changed to quite insignificant 

 twigs. 



In the light of these facts it becomes evident that the formerly practical 

 method of a simple morphological description of that which exists in the 

 adult animal, and above all the simple transferring of mammalian relations 



N.ip- (J.y. _ Of. ON.r 



Fig. 266. — Cranial ganglia and nerves of a four-millimeter Ammocates. 

 (After Kupffer.) 



Gm.m.. 



B.ir. o.v. 



GN.e 



Kf. Nt 



Fig. 26c. — Cranial ganglia and nerves of a twelve-centimeter Ammoowtes. 

 (After Kupffer.) 



Explanation of the figures: O.O., Ganglion ophthalmicum. R.o.t., Radix 

 ophthal. N. trigem. N.t., Xervus trigeminus. R.N.t., Radices N. trigem. G.m.m., 

 Ggl. niaxillo-mandibulare. G.N.f-, Ggl. N. facialis. R.lf.f., Radix N. facialis. 

 Ot., Otocyst. G.G., Ggl. N. glosso-pharj-ngei. G.V., Ggl. Vagi. N.g., N. glosso- 

 pharyngeus. N.l.p., N. lateralis prof. R.I.T., Ramus lat. Vagi. R.V., Radices N. 

 Vagi. R.N.V., Rami N. Vagi. 1, 6, 8, 10, Epibranehial ganglia of these numbers, 

 respectively. 



